US4985299A - Stratiform product in sheet form for packaging purposes - Google Patents

Stratiform product in sheet form for packaging purposes Download PDF

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Publication number
US4985299A
US4985299A US07/495,170 US49517090A US4985299A US 4985299 A US4985299 A US 4985299A US 49517090 A US49517090 A US 49517090A US 4985299 A US4985299 A US 4985299A
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US
United States
Prior art keywords
layer
product according
impact
packaging product
packaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/495,170
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English (en)
Inventor
Piero R. Clerici
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Velcro Industries BV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US4985299A publication Critical patent/US4985299A/en
Assigned to VELCRO INDUSTRIES B.V. reassignment VELCRO INDUSTRIES B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CLERICI, PIERO RUSCONI
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/045—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/08—Closed cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B32B2553/02—Shock absorbing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249976—Voids specified as closed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249982—With component specified as adhesive or bonding agent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249982—With component specified as adhesive or bonding agent
    • Y10T428/249985—Composition of adhesive or bonding component specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/249991—Synthetic resin or natural rubbers

Definitions

  • the present invention relates to a stratiform product in sheet form for packaging purposes.
  • Products in sheet form for packaging purposes are known in the most different shapes and made from different materials, such as paper, films or sheets of closed-cell foamed polyethylene, films of transparent plastic materials applied onto cardboard supports in order to produce the so-said "blister" packages, and so on.
  • Each one of said packaging products displays spcific characteristics and properties, which determine each time their use.
  • a stratiform product in sheet form for packaging purposes is proposed, which is substantially characterized in that it comprises at least one impact-resistant film and a layer constituted by an elastomeric mass endowed with properties of selective and repetitive adhesion, with said film and said layer being united to each other by means of an inseparable bond.
  • Impact-resistant films are per-se known and used for packaging purposes.
  • Such films can be constituted, e.g., by closed-cell foamed polyethylene, by polyurethanic foams, by bubble polyethylene, and the like and, according to their use, such films can have various values of thickness.
  • the elastomeric masses endowed with properties of selective and repetitive adhesion are per se known.
  • that natural property is known of such elastomeric products, as natural rubber and/or synthetic rubber, which consists in that they adhere to themselves only, with a feature which could be called as “selective and repetitive adhesion”: “selective”, in that these products do not adhere to other surfaces but themselves or analogous products, and “repetitive”, in that their adhesiveness is not lost after repeated operations of detachment and re-attachment (i.e., of opening and closure).
  • the impact protection of the articles packaged with this sheet product is supplied by the impact-resistant film of closed-cell foamed polyethylene and the like;
  • the protection against the environmental agents is supplied by the capability shown by the layer of elastomeric type of adhering, with tight sealing, to itself, and not to the packaged articles; such a feature results furthermore in the contact of the layer of elastomeric type with surfaces of a different nature, specifically with the surfaces of the packaged articles, not generating any transfers or depositions of the elastomeric mass onto the same articles, both over time and following changes in environmental conditions and, more particularly, changes in humidity, temperature, pressure, and so on; as well as, viceversa, the external decorations of the packaged articles not adhering to the surface of the packaging product in sheet form;
  • the adhesion of the elastomeric mass to itself generates such an adhesion force as to secure that the packaged article, or the articles packaged all together remain(s) in its(their) position(s) as established at packaging time, even if said packages are stressed by fortuitous impacts, thus endowing the package with a characteristic analogous to the feature of the so-said "blister" packages;
  • the packaged article(s) can be accessed, by opening the package, in order to perform inspection and/or check operations (quality control, customs inspections, and so forth) and the initial integrity of the package can be subsequently restored.
  • the elastomeric layer can be directly applied onto the impact-resistant film, by adopting per se known technologies, such as, e.g., spreading, calendering, and the like.
  • a product in sheet form for packaging purposes can be provided as well, which is obtained by first applying, by means of these technologies known from the prior art, the elastomeric layer onto a flat support of the type of nonwoven fabric, knitted fabric, plastic film (e.g., polyethylene and/or polypropylene films), and the like, and then coupling such an intermediate product with the impact-resistant film: in such case, between the impact-resistant film and the elastomeric layer a further layer of non-woven fabric, plastic film, or the like, is additionally provided.
  • the elastomeric layer onto a flat support of the type of nonwoven fabric, knitted fabric, plastic film (e.g., polyethylene and/or polypropylene films), and the like, and then coupling such an intermediate product with the impact-resistant film: in such case, between the impact-resistant film and the elastomeric layer a further layer of non-woven fabric, plastic film, or the like, is additionally provided.
  • FIG. 1 shows a schematic, sectional view on an enlarged scale of the stratiform product in sheet form for packaging purposes
  • FIG. 2 shows, in the same way as of FIG. 1, a different form of practical embodiment of the packaging product
  • FIG. 3 shows a perspective view of articles packaged between two sheets of packaging material according to the present invention, of the same type as shown in FIG. 1.
  • FIG. 1 a stratiform product in sheet form for packaging purposes is shown, which is generally indicated by the reference numeral 10, and is constituted by an impact-resistant film 11, on one face of which an adhesion-promoter layer 12 is applied, and by an elastomeric layer 13 superimposed to said layer 12.
  • this product in sheet form for packaging purposes was obtained as follows.
  • a closed-cell polyethylene film (of the type of BREMBOCELL, trade mark by Bayer AG) was submitted to a preliminary treatment, on one of its faces, according to the well-known technique of corona-discharge or plasma treatment, in order to improve the characteristics of adhesiveness of said surface.
  • an adhesion promoter layer was then applied in an adequate amount, in particular in an amount of approximately 20 g/m 2 .
  • the adhesion promoter one of the following products available from the market can be used: MOWILITH DM 772 or ADDITOL VXL 4950 by Hoechst AG, LUNATACK D 5438c OR LUNATACK HM 6515c by H. B. Fuller G.m.b.H.
  • a layer made from a mixture of elastomers of the types of natural rubber and synthetic rubber was then applied by means of techniques known from the prior art, e.g., by spreading.
  • a mixture of elastomers was constituted, e.g., by 50% by weight of natural rubber and 50% by weight of synthetic rubber, e.g., a thermoplastic rubber, or by up to 60% by weight of natural rubber and 40% by weight of synthetic rubber, dissolved at 30% of solid matter in a blend of suitable solvents, such as aromatic and/or naphthenic solvents, constituted, e.g., by 35% of toluene and 65% of cyclohexane.
  • suitable solvents such as aromatic and/or naphthenic solvents
  • the so prepared product was then caused to run through an evaporation oven in order to dry the elastomeric mass in solution spread above the adhesion-promoter layer applied above the closed-cell polyethylene film, and finally a stratiform product in sheet form for packaging purposes was obtained, which was constituted by a closed-cell polyethylene film provided on one of its faces with a layer with characteristics of selective and repetitive adhesion.
  • FIG. 2 A variant of the packaging product according to the present invention is shown in FIG. 2, wherein the sheet, generally indicated with the reference numeral 10a, is constituted by an impact-resistant film 11 bearing on one of its faces a layer of hot-melt adhesive 15 and by a layer of non-woven fabric 14 bearing an elastomeric layer 13, with said film 11 with the hot-melt adhesive layer 15 and said layer of non-woven fabric 14 with the elastomeric layer 13 being suitably coupled with each other in order to produce the packaging product in sheet form.
  • the sheet generally indicated with the reference numeral 10a
  • the sheet is constituted by an impact-resistant film 11 bearing on one of its faces a layer of hot-melt adhesive 15 and by a layer of non-woven fabric 14 bearing an elastomeric layer 13, with said film 11 with the hot-melt adhesive layer 15 and said layer of non-woven fabric 14 with the elastomeric layer 13 being suitably coupled with each other in order to produce the packaging product in sheet form.
  • this product was obtained as follows.
  • a non-woven fabric of a normally treaded type e.g., the non-woven fabric manufactured by Nordlys and traded under the mark VIGNEC 105
  • a mixture of elastomers in solution was applied by spreading, and the applied layer was dried in an evaporation oven.
  • a layer of ethylene-acrylic acid copolymer, constituting a hot-melt adhesive was applied by spreading in an amount of 10-15 g/m 2 .
  • an I.R. region was provided, through which the only closed-cell polyethylene film bearing the hot-melt adhesive layer was caused to run, in order to pre-heat said hot-melt adhesive layer until it was softened.
  • the uncoated face of the non-woven fabric was then brought into contact with the layer of softened hot-melt adhesive borne by the closed-cell polyethylene film, and the two, so-coupled, intermediate components were caused to run through the two rolls of the calender, which rolls were kept under suitable conditions of temperature and pressure.
  • This step is usually defined as "continuous coupling with calendering".
  • FIG. 3 a package containing two things is schematically shown, which is obtained by using two packaging sheets of the same type as shown in FIG. 1.
  • the package shown is similar to the so-said "blister" type of package, with a first sheet A and a second sheet B enclosing between each other two objects C and D.
  • Each of said sheets A and B is constituted by an impact-resistant film 11A and respectively 11B, on a face of which the elastomeric layer 13A and 13B is respectively spread.
  • the two sheets A and B are applied to the things C and D to be packaged in such a way as to face each other with their faces bearing the layers 13A and 13B, which layers, in the regions which surround the things C and D are brought into mutual contact in order to adhere to each other, and therefore enclose the packaged things under tight sealing conditions, as one can clearly see from FIG. 3. Thanks to the hereinabove disclosed properties of the elastomeric layers 13A and 13B of the packaging sheets A and B, of adhering to themselves only, they will not adhere to the surfaces of the packaged things C and D.
  • the two packaging sheets A and B can be detached from each other, in that their elastomeric layers 13A and 13B enable them to get detached from each other, without thereby lose their adhesiveness, therefore making it possible the integrity of the package to be restored.
  • the articles C and D are protected against the impacts by the impact-resistant films 11A and 11B of the two packaging sheets A and B, and they are protected against the environmental agents and are kept in their position as pre-established at the packaging time, in that they are surrounded by regions in which the layers 13A and 13B of the two sheets of packaging material A and B adhere to each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Buffer Packaging (AREA)
US07/495,170 1989-03-20 1990-03-16 Stratiform product in sheet form for packaging purposes Expired - Lifetime US4985299A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19828A/89 1989-03-20
IT8919828A IT1228692B (it) 1989-03-20 1989-03-20 Prodotto stratiforme in foglio per imballaggio.

Publications (1)

Publication Number Publication Date
US4985299A true US4985299A (en) 1991-01-15

Family

ID=11161620

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/495,170 Expired - Lifetime US4985299A (en) 1989-03-20 1990-03-16 Stratiform product in sheet form for packaging purposes

Country Status (5)

Country Link
US (1) US4985299A (ja)
JP (1) JPH02297438A (ja)
DE (1) DE4008802A1 (ja)
FR (1) FR2644437B1 (ja)
IT (1) IT1228692B (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026579A1 (en) 2000-09-29 2002-04-04 Velcro Industries B.V. Reclosable package and closure strip
US20030181541A1 (en) * 2002-01-31 2003-09-25 Dong Wu Dental pastes, dental articles, and methods
US20050096613A1 (en) * 2003-11-04 2005-05-05 Carper James D. Cling film fastening system for disposable soft goods
JP2014034171A (ja) * 2012-08-09 2014-02-24 Inoac Corp 積層体および包装資材
US10625915B2 (en) 2008-01-21 2020-04-21 Cpi Card Group—Minnesota, Inc. Ultrasecure card package

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29517641U1 (de) * 1995-11-07 1996-01-04 Siemens AG, 80333 München Gegenstand mit folienartigem Schutz, insbesondere Installationsgerät
WO2005040002A1 (ja) * 2003-10-28 2005-05-06 Sumiron Co., Ltd. 発臭性廃棄物の封止基材及び発臭性廃棄物の封止方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576854A (en) * 1983-07-21 1986-03-18 Nippon Optical Fiber Co., Ltd. Packaging tape
US4791024A (en) * 1982-02-04 1988-12-13 Ausonia S.P.A. Dismemberable adhesive junction system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE777270A (en) * 1971-12-24 1972-04-17 Bastin Marcel Packaging material - comprises flexible foam material with adhesive surface
EP0131081A1 (fr) * 1983-07-11 1985-01-16 Jean-Claude Mechin Produit autocollant, procédé pour sa fabrication et application comme pansement, feuille d'emballage ou ruban de fixation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791024A (en) * 1982-02-04 1988-12-13 Ausonia S.P.A. Dismemberable adhesive junction system
US4576854A (en) * 1983-07-21 1986-03-18 Nippon Optical Fiber Co., Ltd. Packaging tape

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002026579A1 (en) 2000-09-29 2002-04-04 Velcro Industries B.V. Reclosable package and closure strip
US20040001927A1 (en) * 2000-09-29 2004-01-01 Velcro Industries B.V., A Netherlands Curacao Antilles Corporation Reclosable package and closure strip
US20030181541A1 (en) * 2002-01-31 2003-09-25 Dong Wu Dental pastes, dental articles, and methods
US20050096613A1 (en) * 2003-11-04 2005-05-05 Carper James D. Cling film fastening system for disposable soft goods
US20050158567A1 (en) * 2003-11-04 2005-07-21 Carper James D. Cling film laminate structure
US10625915B2 (en) 2008-01-21 2020-04-21 Cpi Card Group—Minnesota, Inc. Ultrasecure card package
US11034497B2 (en) 2008-01-21 2021-06-15 CPI Card Group—Colorado, Inc. Ultrasecure card package
US11267628B2 (en) 2008-01-21 2022-03-08 Cpi Card Group—Minnesota, Inc. Ultrasecure card package
US11905089B2 (en) 2008-01-21 2024-02-20 Cpi Card Group—Minnesota, Inc. Ultrasecure card package
JP2014034171A (ja) * 2012-08-09 2014-02-24 Inoac Corp 積層体および包装資材

Also Published As

Publication number Publication date
IT8919828A0 (it) 1989-03-20
JPH02297438A (ja) 1990-12-07
FR2644437B1 (fr) 1993-04-09
IT1228692B (it) 1991-07-03
DE4008802A1 (de) 1990-09-27
FR2644437A1 (fr) 1990-09-21

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